//package com.atguigu.gulimall.search.service.impl;
//
//import com.alibaba.fastjson.JSON;
//import com.alibaba.fastjson.TypeReference;
//import com.atguigu.common.to.es.SkuEsModel;
//import com.atguigu.common.utils.R;
//import com.atguigu.gulimall.search.GulimallSearchApplication;
//import com.atguigu.gulimall.search.config.GulimallElasticSearchConfig;
//import com.atguigu.gulimall.search.constant.EsConstant;
//import com.atguigu.gulimall.search.feign.ProductFeignService;
//import com.atguigu.gulimall.search.service.MallSearchService;
//import com.atguigu.gulimall.search.vo.AttrResponseVo;
//import com.atguigu.gulimall.search.vo.BrandVo;
//import com.atguigu.gulimall.search.vo.SearchParam;
//import com.atguigu.gulimall.search.vo.SearchResult;
//import org.apache.lucene.search.join.ScoreMode;
//import org.elasticsearch.action.search.SearchRequest;
//import org.elasticsearch.action.search.SearchResponse;
//import org.elasticsearch.client.RestHighLevelClient;
//import org.elasticsearch.index.query.*;
//import org.elasticsearch.search.SearchHit;
//import org.elasticsearch.search.SearchHits;
//import org.elasticsearch.search.aggregations.Aggregation;
//import org.elasticsearch.search.aggregations.AggregationBuilders;
//import org.elasticsearch.search.aggregations.bucket.nested.NestedAggregationBuilder;
//import org.elasticsearch.search.aggregations.bucket.nested.ParsedNested;
//import org.elasticsearch.search.aggregations.bucket.terms.ParsedLongTerms;
//import org.elasticsearch.search.aggregations.bucket.terms.ParsedStringTerms;
//import org.elasticsearch.search.aggregations.bucket.terms.Terms;
//import org.elasticsearch.search.aggregations.bucket.terms.TermsAggregationBuilder;
//import org.elasticsearch.search.builder.SearchSourceBuilder;
//import org.elasticsearch.search.fetch.subphase.highlight.HighlightBuilder;
//import org.elasticsearch.search.fetch.subphase.highlight.HighlightField;
//import org.elasticsearch.search.sort.SortOrder;
//import org.springframework.beans.factory.annotation.Autowired;
//import org.springframework.stereotype.Service;
//import org.springframework.util.StringUtils;
//
//import javax.swing.text.Highlighter;
//import java.io.IOException;
//import java.io.UnsupportedEncodingException;
//import java.net.URLEncoder;
//import java.util.ArrayList;
//import java.util.List;
//import java.util.stream.Collectors;
//
//@Service
//public class MallSearchServiceImpl implements MallSearchService {
//
//    @Autowired
//    private RestHighLevelClient client;
//    @Autowired
//    ProductFeignService productFeignService;
//    //去es进行检索
//    @Override
//    public SearchResult search(SearchParam param) {
//        //1.动态构建出查询需要的DSL语句
//        SearchResult result = null;
//        //1.准备检索请求
//        SearchRequest searchRequest = buildSearchRequrest(param);
//        try {
//            //2.执行检索请求
//            SearchResponse response = client.search(searchRequest, GulimallElasticSearchConfig.COMMON_OPTIONS);
//
//            //3.分析响应数据封装成我们需要的格式
//            result = buildSearchResult(response,param);
//        } catch (IOException e) {
//            throw new RuntimeException(e);
//        }
//        return result;
//    }
//    /**
//     * 准备检索请求
//     * #模糊匹配,过滤(按照属性,分类,品牌,价格区间,库存),排序,分页,高亮,聚合分析
//     * @return
//     */
//    private SearchRequest buildSearchRequrest(SearchParam param) {
//        SearchSourceBuilder sourceBuilder = new SearchSourceBuilder();//构建DSL语句的
//        /**
//         * 查询:过滤(按照属性,分类,品牌,价格区间,库存)
//         */
//        //1.构建bool-query
//        BoolQueryBuilder boolQuery = QueryBuilders.boolQuery();
//        //1.1.must-模糊匹配
//        if(!StringUtils.isEmpty(param.getKeyword())){
//            boolQuery.must(QueryBuilders.matchQuery("skuTitle",param.getKeyword()));
//        }
//        //1.2 bool-filter 按照三级分类id查询
//        if(param.getCatalog3Id()!=null){
//            boolQuery.filter(QueryBuilders.termQuery("catalogId",param.getCatalog3Id()));
//        }
//        //1.2 bool-filter 按照品牌id查询
////        if(param.getBrandId()!=null && param.getBrandId().size()>0){
////            boolQuery.filter(QueryBuilders.termQuery("brandId",param.getBrandId()));
////        }
//        // 1.2 bool-filter 按照品牌id查询
//        if(param.getBrandId()!=null && param.getBrandId().size()>0){
//            // 使用termsQuery处理多个品牌ID
//            boolQuery.filter(QueryBuilders.termsQuery("brandId", param.getBrandId()));
//        }
//        //1.2 bool-filter - 按照所有指定的属性进行查询
//        if(param.getAttrs()!=null && param.getAttrs().size()>0){
//            for (String attrStr : param.getAttrs()) {
//                //attrs=1_5寸:8寸&attrs=2_16G:8G
//                BoolQueryBuilder nestedboolQuery = QueryBuilders.boolQuery();
//                //attr=1_5寸:8寸
//                String[] s = attrStr.split("_");
//                String attrId = s[0];//检索的属性id
//                String[] attrValues = s[1].split(":");//这个属性的检索用的值
//                nestedboolQuery.must(QueryBuilders.termQuery("attrs.attrId",attrId));
////                nestedboolQuery.must(QueryBuilders.termQuery("attrs.attrValue",attrValues));
//                for (String value : attrValues) {
//                    nestedboolQuery.should(QueryBuilders.termQuery("attrs.attrValue", value));
//                }
//                nestedboolQuery.minimumShouldMatch(1);
//                //每一个必须都得生成一个nested查询
//                NestedQueryBuilder nestedQuery = QueryBuilders.nestedQuery("attrs", nestedboolQuery, ScoreMode.None);
//                boolQuery.filter(nestedQuery);
//            }
//        }
//        //1.2 bool-filter - 按照库存是否有进行查询
//        if(param.getHasStock()!=null){
//            boolQuery.filter(QueryBuilders.termQuery("hasStock",param.getHasStock()==1));
//        }
//
//        //1.2 bool-filter - 按照价格区间
//        if(!StringUtils.isEmpty(param.getSkuPrice())){
//            //1_500/_500/500_
//            /**
//             * "range": {
//             *             "skuPrice": {
//             *               "gte": 0,
//             *               "lte": 7000
//             *             }
//             *           }
//             */
//            RangeQueryBuilder rangeQuery = QueryBuilders.rangeQuery("skuPrice");
//            String[] s = param.getSkuPrice().split("_");
//            if(s.length==2){
//                //区间
//                rangeQuery.gte(s[0]).lte(s[1]);
//            }else if(s.length == 1){
//                if(param.getSkuPrice().startsWith("_")){
//                    rangeQuery.lte(s[0]);
//                }
//                if(param.getSkuPrice().endsWith("_")){
//                    rangeQuery.gte(s[0]);
//                }
//            }
//            boolQuery.filter(rangeQuery);
//        }
//
//        //把以前的所有条件都拿来进行封装
//        sourceBuilder.query(boolQuery);
//
//        /**
//         * 排序,分页,高亮,
//         */
//
//        //2.1 排序
//        if(!StringUtils.isEmpty(param.getSort())){
//            String sort = param.getSort();
//            // sort=hotScore_asc/desc
//            String[] s = sort.split("_");
//            SortOrder order = s[1].equalsIgnoreCase("asc")? SortOrder.ASC:SortOrder.DESC;
//            sourceBuilder.sort(s[0],order);
//        }
//        //2.2 分页  pageSize:5
//        //pageNum:1 from:0 size:5 [0,1,2,3,4]
//        //pageNum:2 from:5 size:5
//        //from = (pageNum-1)*size
//        sourceBuilder.from((param.getPageNum()-1)*EsConstant.PRODUCT_PAGESIZE);
//        sourceBuilder.size(EsConstant.PRODUCT_PAGESIZE);
//
//        //2.3高亮
//        if(!StringUtils.isEmpty(param.getKeyword())){
//            HighlightBuilder builder = new HighlightBuilder();
//
//            builder.field("skuTitle");
//            builder.preTags("<b style='color:red'>");
//            builder.postTags("</b>");
//
//            sourceBuilder.highlighter(builder);
//        }
//
//
//
//        /**
//         * 聚合分析
//         */
//        //1.品牌聚合
//        TermsAggregationBuilder brand_agg = AggregationBuilders.terms("brand_agg");
//        brand_agg.field("brandId").size(50);
//
//        //品牌聚合的子聚合
//        brand_agg.subAggregation(AggregationBuilders.terms("brand_name_agg").field("brandName").size(1));
//        brand_agg.subAggregation(AggregationBuilders.terms("brand_img_agg").field("brandImg").size(1));
//        //TODO 1.聚合brand
//        sourceBuilder.aggregation(brand_agg);
//        //2.分类聚合 catalog_agg
//        TermsAggregationBuilder catalog_agg = AggregationBuilders.terms("catalog_agg").field("catalogId").size(20);
//        catalog_agg.subAggregation(AggregationBuilders.terms("catalog_name_agg").field("catalogName").size(1));
//        //TODO 2.聚合catalog
//        sourceBuilder.aggregation(catalog_agg);
//        //3.属性聚合
//        NestedAggregationBuilder attr_agg = AggregationBuilders.nested("attr_agg", "attrs");
//        //聚合出当前所有的attrId
//        TermsAggregationBuilder attr_id_agg = AggregationBuilders.terms("attr_id_agg").field("attrs.attrId");
//        //聚合分析出当前attr_id对应的名字
//        attr_id_agg.subAggregation(AggregationBuilders.terms("attr_name_agg").field("attrs.attrName").size(1));
//        //聚合分析出当前attr_id对应的所有可能的属性值attrValue
//        attr_id_agg.subAggregation(AggregationBuilders.terms("attr_value_agg").field("attrs.attrValue").size(50));
//        attr_agg.subAggregation(attr_id_agg);
//        //TODO 3.聚合attr
//        sourceBuilder.aggregation(attr_agg);
//        String s = sourceBuilder.toString();
//        System.out.println("构建的DSL"+s);
//
//        SearchRequest searchRequest = new SearchRequest(new String[]{EsConstant.PRODUCT_INDEX}, sourceBuilder);
//        return searchRequest;
//    }
//
//    /**
//     * 构建结果数据
//     * @param response
//     * @return
//     */
//    private SearchResult buildSearchResult(SearchResponse response, SearchParam param) {
//        SearchResult result = new SearchResult();
//        //1.返回的所有查询到的商品
//        SearchHits hits = response.getHits();
//        List<SkuEsModel> esModels = new ArrayList<>();
//        if(hits.getHits()!=null &&hits.getHits().length>0){
//            for (SearchHit hit : hits.getHits()) {
//                String sourceAsString = hit.getSourceAsString();
//                SkuEsModel sku = new SkuEsModel();
//                SkuEsModel esModel = JSON.parseObject(sourceAsString, SkuEsModel.class);
//                if(!StringUtils.isEmpty(param.getKeyword())) {
//                    HighlightField skuTitle = hit.getHighlightFields().get("skuTitle");
//                    String string = skuTitle.getFragments()[0].string();
//                    esModel.setSkuTitle(string);
//                }
//                esModels.add(esModel);
//            }
//        }
//        result.setProducts(esModels);
//
//
//
////        //2.当前所有商品涉及到的所有属性信息
//        List<SearchResult.AttrVo> attrVos = new ArrayList<>();
//        ParsedNested attr_agg = response.getAggregations().get("attr_agg");
//        ParsedLongTerms attr_id_agg = attr_agg.getAggregations().get("attr_id_agg");
//        for (Terms.Bucket bucket : attr_id_agg.getBuckets()) {
//            SearchResult.AttrVo attrVo = new SearchResult.AttrVo();
//            //1.得到属性的id
//            long attrId = bucket.getKeyAsNumber().longValue();
//            //2.得到属性的名字
//            String attrName = ((ParsedStringTerms) bucket.getAggregations().get("attr_name_agg")).getBuckets().get(0).getKeyAsString();
//            //3.得到属性的所有值
//            List<String> attrValues = ((ParsedStringTerms) bucket.getAggregations().get("attr_value_agg")).getBuckets().stream().map(item -> {
//                String keyAsString = ((Terms.Bucket) item).getKeyAsString();
//                return keyAsString;
//            }).collect(Collectors.toList());
//
//            attrVo.setAttrId(attrId);
//            attrVo.setAttrName(attrName);
//            attrVo.setAttrValue(attrValues);
//
//
//
//            attrVos.add(attrVo);
//        }
////        result.setAttrs();
////        //3.当前所有商品涉及到的所有品牌信息
//        List<SearchResult.BrandVo> brandVos = new ArrayList<>();
//        ParsedLongTerms brand_agg = response.getAggregations().get("brand_agg");
//        for (Terms.Bucket bucket : brand_agg.getBuckets()) {
//            SearchResult.BrandVo brandVo = new SearchResult.BrandVo();
//            //1.得到品牌的id
//            long brandId = bucket.getKeyAsNumber().longValue();
//            //2.得到品牌的名
//            String brandName = ((ParsedStringTerms) bucket.getAggregations().get("brand_name_agg")).getBuckets().get(0).getKeyAsString();
//            //3.得到品牌的图片
//            String brandImg = ((ParsedStringTerms) bucket.getAggregations().get("brand_img_agg")).getBuckets().get(0).getKeyAsString();
//            brandVo.setBrandId(brandId);
//            brandVo.setBrandName(brandName);
//            brandVo.setBrandImg(brandImg);
//            brandVos.add(brandVo);
//        }
//
//        result.setBrands(brandVos);
////        //4.当前所有商品涉及到的所有分类信息
//        ParsedLongTerms catalog_agg = response.getAggregations().get("catalog_agg");
//        List<SearchResult.CatalogVo> catalogVos = new ArrayList<>();
//        List<? extends Terms.Bucket> buckets = catalog_agg.getBuckets();
//        for (Terms.Bucket bucket : buckets) {
//            SearchResult.CatalogVo catalogVo = new SearchResult.CatalogVo();
//            //得到分类id
//            String keyAsString = bucket.getKeyAsString();
//            catalogVo.setCatalogId(Long.parseLong(keyAsString));
//            //得到分类名
//            ParsedStringTerms catalog_name_agg = bucket.getAggregations().get("catalog_name_agg");
//            String catalog_name = catalog_name_agg.getBuckets().get(0).getKeyAsString();
//            catalogVo.setCatalogName(catalog_name);
//            catalogVos.add(catalogVo);
//        }
//        result.setCatalogs(catalogVos);
////=========以上从聚合信息中获取=========
////        //5.分页信息-页码
//        result.setPageNum(param.getPageNum());
////        //6.分页信息-总记录数
//        long total = hits.getTotalHits().value;
//        result.setTotal(total);
////        result.setTotal();
////        //7.分页信息-总页码-计算  11/2=5...1
//        int totalPages = (int)total%EsConstant.PRODUCT_PAGESIZE == 0?(int)total/EsConstant.PRODUCT_PAGESIZE:((int)total/EsConstant.PRODUCT_PAGESIZE+1);
//        result.setTotalPages(totalPages);
//        ArrayList<Integer> pageNavs = new ArrayList<>();
//        for (int i = 1; i < totalPages; i++) {
//            pageNavs.add(i);
//        }
//        result.setPageNavs(pageNavs);
//
//        //6.构建面包屑导航功能
//        if(param.getAttrs()!=null && param.getAttrs().size()>0){
//            List<SearchResult.NavVo> collect = param.getAttrs().stream().map(attr -> {
//                //1.分析每个attrs传过来的查询参数值
//                SearchResult.NavVo navVo = new SearchResult.NavVo();
//                String[] s = attr.split("_");
//                navVo.setNavValue(s[1]);
//                R r = productFeignService.attrInfo(Long.parseLong(s[0]));
//                result.getAttrIds().add(Long.parseLong(s[0]));
//                if(r.getCode()==0){
//                    AttrResponseVo data = r.getData("attr", new TypeReference<AttrResponseVo>() {
//                    });
//                    navVo.setNavName(data.getAttrName());
//                }else{
//                    navVo.setNavName(s[0]);
//                }
//
//                //2.取消了这个面包屑以后,我们要跳转到那个地方,将请求地址的url里面的当前置空
//                //拿到所有的查询条件,去掉当前
//                String replace = replaceQueryString(param, attr,"attrs");
//                navVo.setLink("http://search.gulimall.com/list.html?" + replace);
//                return navVo;
//            }).collect(Collectors.toList());
//            result.setNavs(collect);
//        }
//        //品牌,分类
//        if(param.getBrandId()!=null && param.getBrandId().size()>0){
//            List<SearchResult.NavVo> navs = result.getNavs();
//            SearchResult.NavVo navVo = new SearchResult.NavVo();
//
//            navVo.setNavName("品牌");
//            //TODO 远程查询所有品牌
//            R r = productFeignService.brandsInfo(param.getBrandId());
//            if(r.getCode()==0){
//                List<BrandVo> brand = r.getData("brand", new TypeReference<List<BrandVo>>() {
//                });
//                StringBuffer buffer = new StringBuffer();
//                String replace = "";
//                for (BrandVo brandVo : brand) {
//                    buffer.append(brandVo.getBrandName()+";");
//                    replace = replaceQueryString(param, brandVo.getBrandId()+"","brandId");
//
//                }
//                navVo.setNavValue(buffer.toString());
//                navVo.setLink("http://search.gulimall.com/list.html?" + replace);
//            }
//
//            navs.add(navVo);
//        }
//        //TODO 分类:不需要导航取消
//
//
//
//
//        return result;
//    }
//
//    private static String replaceQueryString(SearchParam param, String value,String key) {
//        String encode = null;
//        try {
//            encode = URLEncoder.encode(value, "UTF-8");
//            encode = encode.replace("+","%20");//浏览器对空格编码和java不一样
//        } catch (UnsupportedEncodingException e) {
//            throw new RuntimeException(e);
//        }
//        String replace = param.get_queryString().replace("&"+key+"=" + encode, "");
//        return replace;
//    }
//
//
//}
package com.atguigu.gulimall.search.service.impl;

import com.alibaba.fastjson.JSONObject;
import com.atguigu.common.to.es.SkuEsModel;
import com.atguigu.gulimall.search.config.GulimallElasticSearchConfig;
import com.atguigu.gulimall.search.constant.EsConstant;
import com.atguigu.gulimall.search.service.MallSearchService;
import com.atguigu.gulimall.search.vo.SearchParam;
import com.atguigu.gulimall.search.vo.SearchResult;
import org.apache.commons.lang3.ArrayUtils;
import org.apache.commons.lang3.StringUtils;
import org.apache.lucene.search.join.ScoreMode;
import org.elasticsearch.action.search.SearchRequest;
import org.elasticsearch.action.search.SearchResponse;
import org.elasticsearch.client.RestHighLevelClient;
import org.elasticsearch.index.query.BoolQueryBuilder;
import org.elasticsearch.index.query.NestedQueryBuilder;
import org.elasticsearch.index.query.QueryBuilders;
import org.elasticsearch.search.SearchHit;
import org.elasticsearch.search.SearchHits;
import org.elasticsearch.search.aggregations.AggregationBuilders;
import org.elasticsearch.search.aggregations.Aggregations;
import org.elasticsearch.search.aggregations.bucket.nested.NestedAggregationBuilder;
import org.elasticsearch.search.aggregations.bucket.nested.ParsedNested;
import org.elasticsearch.search.aggregations.bucket.terms.ParsedLongTerms;
import org.elasticsearch.search.aggregations.bucket.terms.ParsedStringTerms;
import org.elasticsearch.search.aggregations.bucket.terms.Terms;
import org.elasticsearch.search.aggregations.bucket.terms.TermsAggregationBuilder;
import org.elasticsearch.search.builder.SearchSourceBuilder;
import org.elasticsearch.search.fetch.subphase.highlight.HighlightBuilder;
import org.elasticsearch.search.sort.SortOrder;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.CollectionUtils;
import org.yaml.snakeyaml.util.UriEncoder;

import java.io.IOException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

/**
 * 商城检索
 *
 * @Author: wanzenghui
 * @Date: 2021/11/10 23:51
 */
@Service
public class MallSearchServiceImpl implements MallSearchService {

    @Autowired
    RestHighLevelClient client;

    /**
     * 检索商品
     */
    @Override
    public SearchResult search(SearchParam param) {
        // 1.准备检索请求，动态构建DSL语句
        SearchRequest searchRequest = buildSearchRequest(param);

        SearchResult result = null;// 结果
        try {
            // 2.执行检索请求
            SearchResponse response = client.search(searchRequest, GulimallElasticSearchConfig.COMMON_OPTIONS);

            // 3.分析相应数据封装result返回
            result = buildSearchResuult(response, param);
        } catch (IOException e) {
            e.printStackTrace();
        }

        return result;
    }

    /**
     * 动态构建检索请求
     * 模糊匹配，过滤（按照属性，分类，品牌，价格区间，库存），排序，分页，高亮 ,聚合分析【分析所有可选的规格、分类、品牌】
     */
    private SearchRequest buildSearchRequest(SearchParam param) {
        // 构建SourceBuilder【通过builder构建DSL语句】
        SearchSourceBuilder builder = new SearchSourceBuilder();

        // 动态构建查询DSL语句【参照dsl.json分析包装步骤】
        // 查询：模糊匹配，过滤（按照属性，分类，品牌，价格区间，库存）
        // 1.构建bool
        BoolQueryBuilder boolQueryBuilder = QueryBuilders.boolQuery();
        // 1.1.构建must（模糊查询）
        if (StringUtils.isNotBlank(param.getKeyword())) {
            boolQueryBuilder.must(QueryBuilders.matchQuery("skuTitle", param.getKeyword()));
        }
        // 1.2.构建filter（过滤）
        // 1.2.1.三级分类
        if (param.getCatalog3Id() != null) {
            boolQueryBuilder.filter(QueryBuilders.termQuery("catalogId", param.getCatalog3Id()));
        }
        // 1.2.2.品牌id
        if (!CollectionUtils.isEmpty(param.getBrandId())) {
            boolQueryBuilder.filter(QueryBuilders.termsQuery("brandId", param.getBrandId()));
        }
        // 1.2.3.属性
        if (!CollectionUtils.isEmpty(param.getAttrs())) {
            for (String attr : param.getAttrs()) {
                // attrs=1_白色:蓝色
                String[] attrs = attr.split("_");
                String attrId = attrs[0];// 1
                String[] attrValues = attrs[1].split(":");// ["白色","蓝色"]
                BoolQueryBuilder nestedBoolQueryBuilder = QueryBuilders.boolQuery()
                        .must(QueryBuilders.termQuery("attrs.attrId", attrId))
                        .must(QueryBuilders.termsQuery("attrs.attrValue", attrValues));
                // 遍历每一个属性生成一个NestedQuery
                NestedQueryBuilder nestedQueryBuilder = QueryBuilders.nestedQuery("attrs", nestedBoolQueryBuilder, ScoreMode.None);// ScoreMode.None：不参与评分
                boolQueryBuilder.filter(nestedQueryBuilder);
            }
        }

        // 1.2.4.库存
        if (param.getHasStock() != null) {
            boolQueryBuilder.filter(QueryBuilders.termQuery("hasStock", param.getHasStock() == 1));
        }

        // 1.2.5.价格区间【多种区间传参方式：1_500/_500/500_】
        if (StringUtils.isNotBlank(param.getSkuPrice())) {
            String[] prices = param.getSkuPrice().split("_");
            if (prices.length == 2) {
                // 1_500
                boolQueryBuilder.filter(QueryBuilders.rangeQuery("skuPrice").gte(prices[0]).lte(prices[1]));
            } else if (prices.length == 1) {
                if (param.getSkuPrice().startsWith("_")) {
                    // _500
                    boolQueryBuilder.filter(QueryBuilders.rangeQuery("skuPrice").lte(prices[0]));
                } else if (param.getSkuPrice().endsWith("_")) {
                    // 500_
                    boolQueryBuilder.filter(QueryBuilders.rangeQuery("skuPrice").gte(prices[0]));
                }
            }
        }

        // 1.3.封装bool【bool封装了模糊查询+过滤】
        builder.query(boolQueryBuilder);

        // 1.4.排序，分页，高亮
        // 1.4.1.排序
        if (StringUtils.isNotBlank(param.getSort())) {
            String[] sorts = param.getSort().split("_");
            builder.sort(sorts[0], sorts[1].toLowerCase().equals(SortOrder.ASC.toString()) ? SortOrder.ASC : SortOrder.DESC);
        }
        // 1.4.2.分页
        builder.from(EsConstant.PRODUCT_PAGESIZE * (param.getPageNum() - 1));
        builder.size(EsConstant.PRODUCT_PAGESIZE);
        // 1.4.3.高亮
        if (StringUtils.isNotBlank(param.getKeyword())) {
            // 模糊匹配才需要高亮
            HighlightBuilder highlightBuilder = new HighlightBuilder();
            highlightBuilder.field("skuTitle").preTags("<b style='color:red'>").postTags("</b>");
            builder.highlighter(highlightBuilder);
        }

        // 1.5.聚合分析【分析所有可选的规格、分类、品牌】
        // 1.5.1.品牌聚合
        TermsAggregationBuilder brandAgg = AggregationBuilders.terms("brand_agg").field("brandId").size(50);
        // 品牌聚合子聚合
        brandAgg.subAggregation(AggregationBuilders.terms("brand_name_agg").field("brandName").size(1));
        brandAgg.subAggregation(AggregationBuilders.terms("brand_img_agg").field("brandImg").size(1));
        builder.aggregation(brandAgg);

        // 1.5.2.分类聚合
        TermsAggregationBuilder catalogAgg = AggregationBuilders.terms("catalog_agg").field("catalogId").size(20);
        catalogAgg.subAggregation(AggregationBuilders.terms("catalog_name_agg").field("catalogName").size(1));
        builder.aggregation(catalogAgg);

        // 1.5.3.属性嵌套聚合
        NestedAggregationBuilder attrNestedAgg = AggregationBuilders.nested("attr_agg", "attrs");
        // 属性子聚合
        TermsAggregationBuilder attrIdAgg = AggregationBuilders.terms("attr_id_agg").field("attrs.attrId").size(50);
        attrNestedAgg.subAggregation(attrIdAgg);
        attrIdAgg.subAggregation(AggregationBuilders.terms("attr_name_agg").field("attrs.attrName").size(1));
        attrIdAgg.subAggregation(AggregationBuilders.terms("attr_value_agg").field("attrs.attrValue").size(50));
        builder.aggregation(attrNestedAgg);

        System.out.println("构建的DSL语句: " + builder.toString());
        // 根据构建了DSL语句的builder创建检索请求对象
        SearchRequest searchRequest = new SearchRequest(new String[]{EsConstant.PRODUCT_INDEX}, builder);
        return searchRequest;
    }

    /**
     * 封装检索结果
     * 1、返回所有查询到的商品
     * 2、分页信息
     * 3、当前所有商品涉及到的所有属性信息
     * 4、当前所有商品涉及到的所有品牌信息
     * 5、当前所有商品涉及到的所有分类信息
     */
    private SearchResult buildSearchResuult(SearchResponse response, SearchParam param) {
        SearchResult result = new SearchResult();
        // ==========从命中结果获取===========hits
        SearchHits hits = response.getHits();// 获取命中结果
        // 1.返回所有查询到的商品
        List<SkuEsModel> products = new ArrayList<>();
        if (!ArrayUtils.isEmpty(hits.getHits())) {
            for (SearchHit hit : hits.getHits()) {
                String jsonString = hit.getSourceAsString();// 获取jsonString
                SkuEsModel esModel = JSONObject.parseObject(jsonString, SkuEsModel.class);
                if (StringUtils.isNotBlank(param.getKeyword())) {
                    // 关键字不为空，返回结果包含高亮信息
                    // 高亮信息
                    String skuTitle = hit.getHighlightFields().get("skuTitle").fragments()[0].string();
                    esModel.setSkuTitle(skuTitle);
                }
                products.add(esModel);
            }
        }
        result.setProducts(products);
        // 2.分页信息
        long total = hits.getTotalHits().value;
        long totalPages = total % EsConstant.PRODUCT_PAGESIZE == 0 ? total / EsConstant.PRODUCT_PAGESIZE : total / EsConstant.PRODUCT_PAGESIZE + 1;
        result.setPageNum(param.getPageNum());// 当前页码
        result.setTotal(total);// 总记录数
        result.setTotalPages((int) totalPages);// 总页码
        // 导航页码
        List<Integer> pageNavs = new ArrayList<>();
        for (int i = 1; i <= totalPages; i++) {
            pageNavs.add(i);
        }
        result.setPageNavs(pageNavs);

        // ==========从聚合结果获取===========aggregations
        Aggregations aggregations = response.getAggregations();// 获取聚合结果
        // 3.当前所有商品涉及到的所有属性信息
        ArrayList<SearchResult.AttrVo> attrs = new ArrayList<>();
        ParsedNested attrAgg = aggregations.get("attr_agg");
        ParsedLongTerms attrIdAgg = attrAgg.getAggregations().get("attr_id_agg");
        Map<Long, String> attrMap = new HashMap<>();// 面包屑map数据源【属性名】
        for (Terms.Bucket bucket : attrIdAgg.getBuckets()) {
            // 封装属性ID
            SearchResult.AttrVo attr = new SearchResult.AttrVo();
            attr.setAttrId(bucket.getKeyAsNumber().longValue());
            // 封装属性名
            ParsedStringTerms attrNameAgg = bucket.getAggregations().get("attr_name_agg");
            attr.setAttrName(attrNameAgg.getBuckets().get(0).getKeyAsString());
            // 封装属性值
            ParsedStringTerms attrValueAgg = bucket.getAggregations().get("attr_value_agg");
            List<String> attrValue = attrValueAgg.getBuckets().stream()
                    .map(valueBucket -> valueBucket.getKeyAsString())
                    .collect(Collectors.toList());
            attr.setAttrValue(attrValue);
            attrs.add(attr);
            // 构建面包屑数据源
            if (!CollectionUtils.isEmpty(param.getAttrs()) && !attrMap.containsKey(attr.getAttrId())) {
                attrMap.put(attr.getAttrId(), attr.getAttrName());
            }
        }
        result.setAttrs(attrs);

        // 4.当前所有商品涉及到的所有品牌信息
        List<SearchResult.BrandVo> brands = new ArrayList<>();
        ParsedLongTerms brandAgg = aggregations.get("brand_agg");
        Map<Long, String> brandMap = new HashMap<>();// 面包屑map数据源【品牌】
        for (Terms.Bucket bucket : brandAgg.getBuckets()) {
            // 封装品牌ID
            SearchResult.BrandVo brand = new SearchResult.BrandVo();
            brand.setBrandId(bucket.getKeyAsNumber().longValue());
            // 封装品牌名
            ParsedStringTerms brandNameAgg = bucket.getAggregations().get("brand_name_agg");
            brand.setBrandName(brandNameAgg.getBuckets().get(0).getKeyAsString());
            // 封装品牌图片
            ParsedStringTerms brandImgAgg = bucket.getAggregations().get("brand_img_agg");
            brand.setBrandImg(brandImgAgg.getBuckets().get(0).getKeyAsString());
            brands.add(brand);
            // 构建面包屑数据源
            if (!CollectionUtils.isEmpty(param.getBrandId()) ) {
                brandMap.put(brand.getBrandId(), brand.getBrandName());
            }
        }
        result.setBrands(brands);

        // 5.当前所有商品涉及到的所有分类信息
        List<SearchResult.CatalogVo> catalogs = new ArrayList<>();
        ParsedLongTerms catalogAgg = aggregations.get("catalog_agg");
        String catalogName = null;// 面包屑map数据源【分类】
        for (Terms.Bucket bucket : catalogAgg.getBuckets()) {
            // 封装分类ID
            SearchResult.CatalogVo catalog = new SearchResult.CatalogVo();
            catalog.setCatalogId(bucket.getKeyAsNumber().longValue());
            // 封装分类名
            ParsedStringTerms catalogNameAgg = bucket.getAggregations().get("catalog_name_agg");// 子聚合
            catalog.setCatalogName(catalogNameAgg.getBuckets().get(0).getKeyAsString());
            catalogs.add(catalog);
            // 构建面包屑数据源
            if (catalog.getCatalogId().equals(param.getCatalog3Id())) {
                catalogName = catalog.getCatalogName();
            }
        }
        result.setCatalogs(catalogs);

        // 6.构建面包屑导航数据_属性
        if (!CollectionUtils.isEmpty(param.getAttrs())) {
            // 属性非空才需要面包屑功能
            List<SearchResult.NavVo> navs = param.getAttrs().stream().map(attr -> {
                // attr：15_海思
                SearchResult.NavVo nav = new SearchResult.NavVo();
                String[] arr = attr.split("_");
                // 封装筛选属性ID集合【给前端判断哪些属性是筛选条件，从而隐藏显示属性栏，显示在面包屑中】
                result.getAttrIds().add(Long.parseLong(arr[0]));
                // 面包屑名字：属性名
                nav.setNavName(attrMap.get(Long.parseLong(arr[0])));
                // 面包屑值：属性值
                nav.setNavValue(arr[1]);
                // 设置跳转地址（将属性条件置空）【当取消面包屑上的条件时，跳转地址】
                String replace = replaceQueryString(param, "attrs", attr);
                nav.setLink("http://search.gulimall.com/list.html?" + replace);// 每一个属性都有自己对应的回退地址

                return nav;
            }).collect(Collectors.toList());
            result.setNavs(navs);
        }

        // 7.构建面包屑导航数据_品牌
        if (!CollectionUtils.isEmpty(param.getBrandId())) {
            List<SearchResult.NavVo> navs = result.getNavs();
            // 多个品牌ID封装成一级面包屑，所以这里只需要一个NavVo
            SearchResult.NavVo nav = new SearchResult.NavVo();
            // 面包屑名称直接使用品牌
            nav.setNavName("品牌");
            StringBuffer buffer = new StringBuffer();
            String replace = "";
            for (Long brandId : param.getBrandId()) {
                // 多个brandId筛选条件汇总为一级面包屑，所以navValue拼接所有品牌名
                buffer.append(brandMap.get(brandId)).append(";");
                // 因为多个brandId汇总为一级面包屑，所以每一个brandId筛选条件都要删除
                replace = replaceQueryString(param, "brandId", brandId.toString());
            }
            nav.setNavValue(buffer.toString());// 品牌拼接值
            nav.setLink("http://search.gulimall.com/list.html?" + replace);// 回退品牌面包屑等于删除所有品牌条件
            navs.add(nav);
        }

        // 构建面包屑导航数据_分类
        if (param.getCatalog3Id() != null) {
            List<SearchResult.NavVo> navs = result.getNavs();
            SearchResult.NavVo nav = new SearchResult.NavVo();
            nav.setNavName("分类");
            nav.setNavValue(catalogName);// 分类名
            StringBuffer buffer = new StringBuffer();
//            String replace = replaceQueryString(param, "catalog3Id", param.getCatalog3Id().toString());
//            nav.setLink("http://search.gulimall.com/list.html?" + replace);
            navs.add(nav);
        }


        return result;
    }

    private String replaceQueryString(SearchParam param, String key, String value) {
        // 解决编码问题，前端参数使用UTF-8编码了
        String encode = null;
        encode = UriEncoder.encode(value);
//                try {
//                    encode = URLEncoder.encode(attr, "UTF-8");// java将空格转义成了+号
//                    encode = encode.replace("+", "%20");// 浏览器将空格转义成了%20，差异化处理，否则_queryString与encode匹配失败
//                } catch (UnsupportedEncodingException e) {
//                    e.printStackTrace();
//                }
        // TODO BUG，第一个参数不带&
        // 替换掉当前查询条件，剩下的查询条件即是回退地址
        String replace = param.get_queryString().replace("&" + key + "=" + encode, "");
        return replace;
    }


}
